At 03/02/2017 05:43 PM, Marc Joliet wrote:
On Thursday 02 March 2017 08:43:53 Qu Wenruo wrote:
At 02/02/2017 08:01 PM, Marc Joliet wrote:
On Sunday 28 August 2016 15:29:08 Kai Krakow wrote:
Hello list!
Hi list
[kernel message snipped]
Btrfs --repair refused to repair the filesystem telling me something
about compressed extents and an unsupported case, wanting me to take an
image and send it to the devs. *sigh*
I haven't tried a repair yet; it's a big file system, and btrfs-check is
still running:
# btrfs check -p /dev/sdd2
Checking filesystem on /dev/sdd2
UUID: f97b3cda-15e8-418b-bb9b-235391ef2a38
parent transid verify failed on 3829276291072 wanted 224274 found 283858
parent transid verify failed on 3829276291072 wanted 224274 found 283858
parent transid verify failed on 3829276291072 wanted 224274 found 283858
parent transid verify failed on 3829276291072 wanted 224274 found 283858
Normal transid error, can't say much about if it's harmless, but at
least some thing went wrong.
Ignoring transid failure
leaf parent key incorrect 3829276291072
bad block 3829276291072
That's some what a big problem for that tree block.
If this tree block is extent tree block, no wonder why kernel output
kernel warning and abort transaction.
You could try "btrfs-debug-tree -b 3829276291072 <device>" to show the
content of the tree block.
# btrfs-debug-tree -b 3829276291072 /dev/sdb2
btrfs-progs v4.9
node 3829276291072 level 1 items 70 free 51 generation 292525 owner 2
fs uuid f97b3cda-15e8-418b-bb9b-235391ef2a38
chunk uuid 1cee580c-3442-4717-9300-8514dd8ff297
key (3828594696192 METADATA_ITEM 0) block 3828933423104 (934798199)
gen 292523
key (3828594925568 METADATA_ITEM 0) block 3829427818496 (934918901)
gen 292525
key (3828595109888 METADATA_ITEM 0) block 3828895723520 (934788995)
gen 292523
key (3828595232768 METADATA_ITEM 0) block 3829202751488 (934863953)
gen 292524
key (3828595412992 METADATA_ITEM 0) block 3829097209856 (934838186)
gen 292523
key (3828595572736 TREE_BLOCK_REF 33178) block 3829235073024
(934871844) gen 292524
key (3828595744768 METADATA_ITEM 0) block 3829128351744 (934845789)
gen 292524
key (3828595982336 METADATA_ITEM 0) block 3829146484736 (934850216)
gen 292524
key (3828596187136 METADATA_ITEM 1) block 3829097234432 (934838192)
gen 292523
key (3828596387840 TREE_BLOCK_REF 33527) block 3829301653504
(934888099) gen 292525
key (3828596617216 METADATA_ITEM 0) block 3828885737472 (934786557)
gen 292523
key (3828596838400 METADATA_ITEM 0) block 3828885741568 (934786558)
gen 292523
key (3828597047296 METADATA_ITEM 0) block 3829320552448 (934892713)
gen 292525
key (3828597231616 METADATA_ITEM 0) block 3828945653760 (934801185)
gen 292523
key (3828597383168 METADATA_ITEM 0) block 3829276299264 (934881909)
gen 292525
key (3828597641216 METADATA_ITEM 1) block 3829349351424 (934899744)
gen 292525
key (3828597866496 METADATA_ITEM 0) block 3829364776960 (934903510)
gen 292525
key (3828598067200 METADATA_ITEM 0) block 3828598321152 (934716387)
gen 292522
key (3828598259712 METADATA_ITEM 0) block 3829422968832 (934917717)
gen 292525
key (3828598415360 TREE_BLOCK_REF 33252) block 3828885803008
(934786573) gen 292523
key (3828598665216 METADATA_ITEM 0) block 3828937863168 (934799283)
gen 292523
key (3828598829056 METADATA_ITEM 0) block 3828885811200 (934786575)
gen 292523
key (3828599054336 METADATA_ITEM 0) block 3829363744768 (934903258)
gen 292525
key (3828599246848 METADATA_ITEM 0) block 3828915838976 (934793906)
gen 292523
key (3828599504896 METADATA_ITEM 0) block 3829436194816 (934920946)
gen 292525
key (3828599672832 METADATA_ITEM 0) block 3828905140224 (934791294)
gen 292523
key (3828599771136 METADATA_ITEM 0) block 3829333323776 (934895831)
gen 292525
key (3828599988224 METADATA_ITEM 0) block 3829087199232 (934835742)
gen 292523
key (3828600135680 METADATA_ITEM 0) block 3828885827584 (934786579)
gen 292523
key (3828600389632 METADATA_ITEM 0) block 3829436284928 (934920968)
gen 292525
key (3828600528896 METADATA_ITEM 0) block 3829316214784 (934891654)
gen 292525
key (3828600729600 METADATA_ITEM 0) block 3828885905408 (934786598)
gen 292523
key (3828600934400 METADATA_ITEM 0) block 3829384486912 (934908322)
gen 292525
key (3828601143296 METADATA_ITEM 0) block 3829423611904 (934917874)
gen 292525
key (3828601356288 METADATA_ITEM 0) block 3829113688064 (934842209)
gen 292524
key (3828601556992 METADATA_ITEM 0) block 3829134540800 (934847300)
gen 292524
key (3828601696256 METADATA_ITEM 0) block 3829181837312 (934858847)
gen 292524
key (3828601823232 METADATA_ITEM 0) block 3829157421056 (934852886)
gen 292524
key (3828602015744 TREE_BLOCK_REF 32943) block 3829316218880
(934891655) gen 292525
key (3828602245120 METADATA_ITEM 0) block 3829207601152 (934865137)
gen 292524
key (3828602384384 METADATA_ITEM 0) block 3828933246976 (934798156)
gen 292523
key (3828602531840 METADATA_ITEM 0) block 3829346013184 (934898929)
gen 292525
key (3828602740736 METADATA_ITEM 0) block 3828916629504 (934794099)
gen 292523
key (3828602990592 METADATA_ITEM 0) block 3829160525824 (934853644)
gen 292524
key (3828603097088 METADATA_ITEM 0) block 3828933267456 (934798161)
gen 292523
key (3828603195392 METADATA_ITEM 0) block 4632523673600 (1130987225)
gen 292474
key (3828603293696 TREE_BLOCK_REF 32827) block 3829160529920
(934853645) gen 292524
key (3828603453440 METADATA_ITEM 0) block 3828886011904 (934786624)
gen 292523
key (3828603711488 METADATA_ITEM 0) block 3829299806208 (934887648)
gen 292525
key (3828603940864 METADATA_ITEM 0) block 3829325082624 (934893819)
gen 292525
key (3828604145664 METADATA_ITEM 0) block 3828886040576 (934786631)
gen 292523
key (3828604321792 METADATA_ITEM 0) block 3829207818240 (934865190)
gen 292524
key (3828604538880 METADATA_ITEM 0) block 3829347282944 (934899239)
gen 292525
key (3828604796928 METADATA_ITEM 1) block 3829304320000 (934888750)
gen 292525
key (3828605042688 METADATA_ITEM 0) block 3829159145472 (934853307)
gen 292524
key (3828605239296 METADATA_ITEM 0) block 3829170442240 (934856065)
gen 292524
key (3828605505536 METADATA_ITEM 0) block 3829360103424 (934902369)
gen 292525
key (3828605698048 METADATA_ITEM 0) block 3829362032640 (934902840)
gen 292525
key (3828605915136 METADATA_ITEM 0) block 3829336616960 (934896635)
gen 292525
key (3828606103552 METADATA_ITEM 0) block 3829360107520 (934902370)
gen 292525
key (3828606291968 METADATA_ITEM 0) block 3829210537984 (934865854)
gen 292524
key (3828606504960 METADATA_ITEM 0) block 3829406662656 (934913736)
gen 292525
key (3828606754816 METADATA_ITEM 0) block 3829345562624 (934898819)
gen 292525
key (3828606943232 METADATA_ITEM 0) block 3829342674944 (934898114)
gen 292525
key (3828607156224 METADATA_ITEM 0) block 3829444628480 (934923005)
gen 292525
key (3828607324160 METADATA_ITEM 0) block 3829087207424 (934835744)
gen 292523
key (3828607561728 METADATA_ITEM 0) block 3829313220608 (934890923)
gen 292525
key (3828607680512 METADATA_ITEM 0) block 3829370867712 (934904997)
gen 292525
key (3828607930368 METADATA_ITEM 0) block 3829411094528 (934914818)
gen 292525
key (3828608180224 METADATA_ITEM 0) block 3829299822592 (934887652)
gen 292525
I wonder, though, whether that is still the same block or whether it has been
replaced during the past two weeks of FS usage.
It's a tree block of extent tree.
So the problem is all about extent tree now.
If it's an extent tree block, then I'm afraid that's the problem.
Not sure if repair can repair such problem, but at least from what I see
in btrfs-progs fsck self testcases, it doesn't handle extent tree error
well.
OK
ERROR: errors found in extent allocation tree or chunk allocation
block group 4722282987520 has wrong amount of free space
failed to load free space cache for block group 4722282987520
checking free space cache [O]
root 32018 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32089 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32091 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32092 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32107 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32189 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32190 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32191 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32265 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32266 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32409 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32410 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32411 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32412 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32413 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32631 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32632 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32633 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32634 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32635 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32636 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32718 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
root 32732 inode 95066 errors 100, file extent discount
Found file extent holes:
start: 413696, len: 4096
File extent holes are completely fine, one of the few problems we can
fix safely in btrfs-check.
Yeah, I found that out myself by searching my btrfs ML archive.
But previous extent tree one is not.
OK
If lowmem mode also reports the same problems only (file extent discount
+ extent tree error), then there is a chance that --init-extent-tree may
help.
But it will be super time consuming though.
Alright, in that case, I'll just reformat the partition and start my backups
over from scratch once btrfs-check is done running (I'll post the current
output in another Email).
FWIW, as per my later messages, after mounting with clear_cache and letting
btrfs-cleaner finish, btrfs-check did *not* print out those errors after
running again. It's now about two weeks later that the file system is showing
problems again.
If btrfs-check didn't print out *any* error, then it should be mostly
fine. (Unless there is some case we don't expose yet)
The problem should be caused by kernel AFAIK.
Oh, and just in case it's relevant, the file system was created with btrfs-
convert (a long time, maybe 1.5 years ago, though; it was originally ext4).
Not sure if it's related.
But at least for that old convert, it's chunk layout is somewhat rare
and sometimes even bug-prone.
Did you balance the btrfs after convert? If so, it should be more like a
traditional btrfs then.
Personally speaking I don't think it is relative for your bug, but much
like a normal extent tree corruption seen in mail list.
Thanks,
Qu
[...]
Greetings
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